摘要

The composite orthogonal, composite coded, Discrete Cosine Transform (DCT), and Discrete Wavelet Transform (DWT) group fingerprinting schemes are constructed. Based on these schemes, the group traitor tracking algorithms (e. g. maximum correlation detector) are implemented. Experiments are carried out to compare the performance of these constructed group fingerprinting schemes. Results show that in all cases the group fingerprinting schemes can perform group detection effectively. The composite coded group fingerprinting scheme performs the best in noisy environment and after JPEG compression. The DWT scheme performs the best under group colluding attacks from different groups and the signal group.

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